First hit when searching for "cyberoam client": http://www.cyberoam.com/cyberoamclients.html. Download link is there, probably includes a readme file on what you should do. On that page is a link to customer support. I'm assuming you are have purchased a license for this product, or whoever needs you to install this programs has, so you should be entitled to customer support. If you do get in contact with support, please note the Ubuntu version on which your Linux Mint version is based to them as well. That may help them find answers for you. (Linux Mint 14 = Ubuntu 12.10; Linux Mint 13 = Ubuntu 12.04; and so on.)